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Annotation of 43BSDReno/contrib/mh/sbr/brkstring.c, revision 1.1

1.1     ! root        1: /* brkstring.c - break string into an array of strings */
        !             2: 
        !             3: #include "../h/mh.h"
        !             4: 
        !             5: 
        !             6: static char *broken[MAXARGS+1];        /* array of substring start addresses */
        !             7: 
        !             8: static int brkany();
        !             9: 
        !            10: char **
        !            11: brkstring(strg, brksep, brkterm)
        !            12:        register char *strg;
        !            13:        register char *brksep, *brkterm;
        !            14: {
        !            15:     register int    bi;
        !            16:     register char   c,
        !            17:                    *sp;
        !            18: 
        !            19:     sp = strg;                 /* scan string, replacing separators with
        !            20:                                   zeroes */
        !            21: 
        !            22:     for (bi = 0; bi < MAXARGS; bi++) {
        !            23:                                /* and entering start addrs in "broken" */
        !            24:        while (brkany (c = *sp, brksep))
        !            25:            *sp++ = 0;
        !            26:        if (!c || brkany (c, brkterm)) {
        !            27:            *sp = 0;
        !            28:            broken[bi] = 0;
        !            29:            return broken;      /* terminator found, finish up */
        !            30:        }
        !            31: 
        !            32:        broken[bi] = sp;        /* set next start addr */
        !            33:        while ((c = *++sp) && !brkany (c, brksep) && !brkany (c, brkterm))
        !            34:                continue;
        !            35:     }
        !            36:     broken[MAXARGS] = 0;       /* reached limit of MAXARGS substrings */
        !            37: 
        !            38:     return broken;
        !            39: }
        !            40: 
        !            41: 
        !            42: static int
        !            43: brkany(chr, strg)      /* returns 1 if chr in strg, 0 otherwise  */
        !            44:        register char chr, *strg;
        !            45: {
        !            46:     register char  *sp;
        !            47: 
        !            48:     if (strg)
        !            49:        for (sp = strg; *sp; sp++)
        !            50:            if (chr == *sp)
        !            51:                return 1;
        !            52:     return 0;
        !            53: }

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